01 - Preheat oven to 400°F.
02 - Slice the top off the garlic bulb to expose the cloves. Drizzle with olive oil, wrap in foil, and roast for 35-40 minutes until soft and golden.
03 - Steam cauliflower florets over boiling water for 12-15 minutes, or until very tender. Drain well.
04 - Squeeze roasted garlic cloves from their skins into a food processor or large bowl.
05 - Add steamed cauliflower, butter, cream cheese, milk, salt, and pepper. Blend or mash until smooth and creamy. Adjust seasoning to taste.
06 - Transfer to a serving bowl, garnish with chives if desired, and serve hot.